// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluation
es6id: 14.4.14
description: Value received from invocation of generator's `return` method
info: |
  YieldExpression : yield * AssignmentExpression

  1. Let exprRef be the result of evaluating AssignmentExpression.
  2. Let value be ? GetValue(exprRef).
  3. Let iterator be ? GetIterator(value).
  4. Let received be NormalCompletion(undefined).
  5. Repeat
     a. If received.[[Type]] is normal, then
        [...]
     b. Else if received.[[Type]] is throw, then
        [...]
     c. Else,
        i. Assert: received.[[Type]] is return.
        ii. Let return be ? GetMethod(iterator, "return").
        iii. If return is undefined, return Completion(received).
        iv. Let innerReturnResult be ? Call(return, iterator, «
            received.[[Value]] »).
        v. If Type(innerReturnResult) is not Object, throw a TypeError
           exception.
        vi. Let done be ? IteratorComplete(innerReturnResult).
        vii. If done is true, then
             1. Let value be ? IteratorValue(innerReturnResult).
             2. Return Completion{[[Type]]: return, [[Value]]: value,
                [[Target]]: empty}.
        viii. Let received be GeneratorYield(innerReturnResult).

features: [generators, Symbol.iterator]
---*/

function Test() {
    var quickIter = {};
    var normalCompletion = false;
    var errorCompletion = false;
    var delegationComplete = false;
    var iter, returnReceived;
    quickIter[Symbol.iterator] = function() {
      return {
        next: function() {
          return { done: false };
        },
        return: function(x) {
          returnReceived = x;
          return { done: true, value: 3333 };
        }
      };
    };
    function* g() {
      try {
        yield * quickIter;
        normalCompletion = true;
      } catch (e) {
        errorCompletion = true;
      } finally {
        delegationComplete = true;
      }
    }

    iter = g();

    iter.next();
    iter.return(2222);
    assert.sameValue(returnReceived, 2222);
    assert.sameValue(delegationComplete, true, 'delegation complete');
    assert.sameValue(normalCompletion, false, 'completion was abrupt');
    assert.sameValue(errorCompletion, false, 'completion was not of type "throw"');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
